HK Rifle / SMG Parts

HK Rifle / SMG Parts

Elevate Your HK Rifle with Premium Parts – MP5, HK416, SP5, and More!

Enhance your HK rifle with top-notch parts and accessories. From HK MP5 and HK MP5K to HK SP5 and HK UMP or HK USC, we offer a vast selection. Discover high-quality magazines, binary triggers, stocks, grips, barrels, handguards, sights, and more for your firearm. Whether you own an HK416, HK SP5K, HK G36, or HK MP5 22, we have the Heckler and Koch rifle parts you've been looking for. Shop now to upgrade your rifle to perfection.

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  • HK G36C Apparel - Hats, Patches, and Shirts HK G36C Apparel - Hats, Patches, and Shirts
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    HK G36C Apparel - Hats, Patches, and Shirts

    HKP HK Parts

    $0.00
    HKP HK G36C Apparel and Patch Collection  Represent your platform with the HK Parts G36C Series apparel and accessories lineup. Built for enthusiasts who appreciate iconic firearms and clean, understated design, this collection delivers premium...
    HKP-22456-M
    $0.00
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    $0.00
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  • HK21 FMP Complete Build Kit- Matching Numbers - MM Barrel HKP HK Parts HKP-21626-1 HK21 FMP Complete Build Kit- Matching Numbers - MM Barrel HKP HK Parts HKP-21626-1
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    HK21 FMP Complete Build Kit - Non Matching Numbers - MM Barrel

    HKP HK Parts

    $4,294.97
    HK21 Complete Build Kit- Non Matching Numbers HK Parts brings you another exhaustive parts kit. Our HK21 parts kit includes everything you need to resurrect an iconic classic and hit the range for belt-fed action. We also included our own hanger with a...
    HKP-22378
    $4,294.97
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  • On Sale
    HK MP5, G3, PTR, HK93 Push Button for Magazine Catch H&K Heckler & Koch HKP-22325 HK MP5, G3, PTR, HK93 Push Button for Magazine Catch H&K Heckler & Koch HKP-22325
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    HK MP5, G3, HK93 Magazine Catch Push Button- Used

    H&K Heckler & Koch

    Now: $4.95
    Was: $8.95
    H&K MP5, G3, PTR, HK93 Push Button for Magazine Catch - Used   Factory original HK push button replacement part. Limited quantity available.   This is a used part, sold AS-IS, and is not eligible for return.  Compatible...
    HKP-99316
    Now: $4.95
    Was: $8.95
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    Now: $4.95
    Was: $8.95
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  • On Sale
    MKE HK MP5/AP5 End Cap Complete MKE HKP-22258 MKE HK MP5/AP5 End Cap Complete MKE HKP-22258
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    HK MP5, AP5 End Cap - Complete

    MKE

    Now: $64.95
    Was: $89.95
    MKE HK MP5/AP5 End Cap Complete Replacement end cap made by MKE on HK tooling. This robust all-steel end cap is a superior upgrade from the standard polymer options. It not only features an integrated H buffer for enhanced performance but also includes a...
    HKP-22258
    Now: $64.95
    Was: $89.95
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    Now: $64.95
    Was: $89.95
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  • On Sale
    New - H&K HK416A1 10.4" Upper Receiver Kit - AI Date Code (2008) - PD Trade-In - HKP-22245 H&K HK 416 10.4 - AI Upper H&K Heckler & Koch HKP-22245
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    HK416 A1 Upper Receiver - 10.4"

    H&K Heckler & Koch

    Now: $2,999.95
    Was: $3,499.95
    HK416 10.4" Complete Upper Receiver Features: Factory German 10.4" length 2008 date coded   P.D. trade-in, de-serialized during the de-milling process.  Finish your build with a matching lower from STS Tactical. Compatible With: HK416
    HKP-22245
    Now: $2,999.95
    Was: $3,499.95
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    Now: $2,999.95
    Was: $3,499.95
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  • New - B&T Assault Closed Tine Muzzle Device - HK416/MR556 - 1/2x28 - HKP-22217 Lee Sporting LS5 HK MP5K Complete Trigger Group Flat Trigger - Semi shelf - 3D-Printed Nylon - BLEMISHED Lee Sporting, Magpul HKP-20484-B
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    HK416, MR556 Muzzle Device - Assault - Closed Tine - 1/2x28

    B&T Brugger & Thomet

    $109.00
    B&T Assault Closed Tine Muzzle Device - HK416/MR556 - 1/2x28 Factory B&T 1/2x28 flash hider and suppressor adapter for 5.56 rifles. Includes: ROTEX flash hider Shim kit Rocksett pipette Features: Swiss-manufactured Threaded 1/2x28 High...
    HKP-22217
    $109.00
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    $109.00
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  • On Sale
    New - Super Slim Picatinny Riser Mount - 4 Slots - BLEMISHED - HKP-99229-M Picatinny Riser Mount - Super Slim - 4 Slots - BLEMISHED
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    Picatinny Riser Mount - Super Slim - 4 Slots - BLEMISHED

    Other

    Now: $26.21
    Was: $49.95
    Super Slim Picatinny Riser Mount - 4 Slots - BLEMISHED COSMETICALLY BLEMISHED PARTS ARE FULLY FUNCTIONAL AND SOLD AS IS. THIS PART IS NOT ELIGIBLE FOR RETURN. ALL BLEMISHED PART SALES ARE FINAL. The slim Picatinny riser mount is offered in two clamp...
    HKP-99229-M
    Now: $26.21
    Was: $49.95
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    Now: $26.21
    Was: $49.95
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  • Out Of Stock
    New - H&K HK MR556 A4 16.5" Barrel - HKP-21931 HK416 A5, MR556 A4 Barrel - 5.56 / .223 - 16.5"

    HK416 A5, MR556 A4 Barrel - 5.56 / .223 - 16.5"

    H&K Heckler & Koch

    $389.95
    H&K HK MR556 A4/A5 16.5" Barrel This 16.5" factory H&K MR556 A4 barrel is cold hammer-forged from high-quality steel for exceptional durability, accuracy, and longevity. Manufactured to Heckler & Koch’s exacting standards, it features a...
    HKP-21931
    $389.95
    Out Of Stock
    Qty in Cart: 0
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    $389.95
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  • On Sale
    New - HK MP5 Trunnion - Gunsmith Special - HKP-99089 HK MP5 Trunnion - Gunsmith Special
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    HK MP5 Trunnion - Gunsmith Special

    USA

    Now: $24.95
    Was: $54.95
    HK MP5 Trunnion - Gunsmith Special US made HK MP5 trunnions sold as-is. Will require work before being functional. We recommend the work be performed by a professional gunsmith. The condition will vary from part-to-part vs. the pictured unit. Compatible...
    HKP-99089
    Now: $24.95
    Was: $54.95
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    Now: $24.95
    Was: $54.95
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  • New - H&K HK 417/MR762 Double Magazine Pouch - HKP-21800 HK417, MR762 Double Magazine Pouch
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    HK417, MR762 Double Magazine Pouch

    H&K Heckler & Koch

    $129.95
    H&K HK 417 Double Magazine Pouch Factory HK double magazine pouch for the HK 417 and MR762 platforms chambered in .308/7.62x51. Compatible With: HK 417 MR762
    HKP-21800
    $129.95
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    $129.95
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  • On Sale
    New - HK MP5 QD End Cap with Buffer - Black - BLEMISHED - HKP-20118-B HK MP5 QD End Cap with Buffer - Black - BLEMISHED
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    HK MP5 QD End Cap with Buffer - Black - BLEMISHED

    HKP HK Parts

    Now: $49.95
    Was: $99.95
    HK MP5 QD End Cap with Buffer - Black - BLEMISHED COSMETICALLY BLEMISHED PARTS ARE FULLY FUNCTIONAL AND SOLD AS IS. THIS PART IS NOT ELIGIBLE FOR RETURN. ALL BLEMISHED PART SALES ARE FINAL. With this MP5 QD end cap upgrade you will get a heavier buffer...
    HKP-20118-B
    Now: $49.95
    Was: $99.95
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    Now: $49.95
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  • Out Of Stock
    New - Nefarious Arms HK 416/MR556 14.5" A5 Barrel - HKP-21590 HK416, MR556 Barrel - 5.56 - 14.5" - Threaded 1/2"x28 - A5

    HK416, MR556 Barrel - 5.56 - 14.5" - Threaded 1/2"x28 - A5

    Nefarious Arms

    $594.95
    Nefarious Arms HK 416/MR556 14.5" A5 Barrel Each Nefarious Arms barrel is cold-hammer-forged and chrome-lined for years of accurate shooting.  Grab this expertly crafted barrel for your next SBR or pistol build.  Compatible With: HK 416 (A5,...
    HKP-21590
    $594.95
    Out Of Stock
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    $594.95
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